Jud and I have gotten hooked on the Orange Cup out at La Cantara. It is pretty expensive so I made a mock version that I found in the Express News of San Antonio.
2 cups plain whole-milk yogurt
2 cups plain nonfat or reduced-fat Greek yogurt
1/2 cup superfine sugar
3 Tablespoons light corn syrup
1/2 cup orange juice
Whisk both yogurts, the sugar, corn syrup, and orange juice in a bowl until combined. Pour into an ice cream maker and freezer according to manufacturer's instructions.